Mesmerize Companion <= 1.6.158 - Missing Authorization Authenticated (Subscriber+) Settings Update

Missing Authorization
CVE CVE-2025-12027
CVSS Medium (4.3)
Publicly Published February 18, 2026
Last Updated February 19, 2026
Researcher Rafshanzani Suhada
Description

The Mesmerize Companion plugin for WordPress is vulnerable to unauthorized access and modification of data due to a missing capability check on the "openPageInCustomizer" and "openPageInDefaultEditor" functions in all versions up to, and including, 1.6.158. This makes it possible for authenticated attackers - with subscriber level access and above, on websites with the Mesmerize theme activated - to mark arbitrary pages as maintainable, wrap their content in custom sections, change page template metadata, and toggle the default editor flag without proper authorization.

References

1 affected software package

Software Type Plugin
Software Slug mesmerize-companion (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 1.6.158
Patched Version
  • 1.6.162
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